Koolertron Upgraded 15MHz DDS Signal Generator Counter,High Precision Dual-Channel Arbitrary Waveform Function Generator Frequency Meter 200MSa/s (15MHz): Amazon.com: Industrial & Scientific
FUNCTION GENERATOR REF1
High Performance Arbitrary Waveform Generators
Signal Generator Module, Normal and Fine Mode DC3.5V~12V Supply DC1V~24V 3W Output Adjustable Frequency Generators for Dimming Application : Amazon.in: Industrial & Scientific